ISO 6145-5:2009 气体分析 动态容量法制备校准混合气体 第5部分：毛细管校准设备

标准编号：ISO 6145-5:2009

中文名称：气体分析 动态容量法制备校准混合气体 第5部分：毛细管校准设备

英文名称：Gas analysis — Preparation of calibration gas mixtures using dynamic volumetric methods — Part 5: Capillary calibration devices

发布日期：2009-11

标准范围

ISO 6145-5:20 09是一系列国际标准之一，涉及用于制备校准气体混合物的各种动态体积技术。本部分规定了使用单个或多个组合的毛细管校准装置（气体分配器）从纯气体或气体混合物连续生产校准气体混合物的方法。单个毛细管系统可用于提供气体混合物，其中次要组分的体积分数在10-8至0.5的范围内。该技术的相对扩展不确定度小于±2%（k=2）。该应用用于工业气体混合板，用于生产特定的气体气氛。气体分配器可用于将由气体或气体混合物制备的气体混合物按体积分成受控比例。这些装置能够以优于0.5%的相对重复性稀释初级气体浓度的0.0005至0.9的体积分数范围。通过将混合物与与国家或国际气体标准相关的气体混合物进行比较来实现由气体分配器产生的气体混合物的可追溯性。附录A给出了一个例子。

ISO 6145-5:2009 is one of a series of International Standards dealing with the various dynamic volumetric techniques used for the preparation of calibration gas mixtures. This part specifies a method for the continuous production of calibration gas mixtures from pure gases or gas mixtures using capillary calibration devices in single or multiple combinations (gas dividers).Single capillary systems can be used to provide gas mixtures where the minor component is in the range of volume fractions from 10^-8 to 0,5.The relative expanded uncertainty of this technique is less than ±2 % (k = 2) relative. This application is used in industrial gas mixing panels for the production of specific gas atmospheres.Gas dividers can be used to divide gas mixtures prepared from gases or gas mixtures into controlled proportions by volume. These devices are capable of dilutions in the range of volume fractions from 0,000 5 to 0,9 of the primary gas concentration with a relative repeatability of better than 0,5 %.Traceability of the gas mixtures produced by a gas divider is achieved by comparison of a mixture with gas mixtures related to national or international gas standards. An example is given in Annex A.

标准预览图